wannacry | c30e2080d3e7fc40e6078c4bad6618bbed86f2b17e7ab6ef11c391999605210a

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
12-09-2024 17:49

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General

Target

dcbe1e887c121da0cebd9e40892f8a2e_JaffaCakes118.exe
Size

3.6MB
MD5

dcbe1e887c121da0cebd9e40892f8a2e
SHA1

3cf0e920dd8969ed039c1ee82fa3f00bf48e0e18
SHA256

c30e2080d3e7fc40e6078c4bad6618bbed86f2b17e7ab6ef11c391999605210a
SHA512

bfafa9a297ff5b21a2cf56ae6a1e5f0fd59b2c5f427b9811f28f1b2e565a37c85c503cf22d2a7c2891753935fc04d0ec60443b8e93e906c9edc5a36b23a440dd
SSDEEP

6144:GE9l9yNqIYVTH5DgSg8ajldktM0XXrs2Qh2I:GwbLgPluxQh2I

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3230) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046

Executes dropped EXE 1 IoCs

pid	Process
2752	tasksche.exe

Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	dcbe1e887c121da0cebd9e40892f8a2e_JaffaCakes118.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	dcbe1e887c121da0cebd9e40892f8a2e_JaffaCakes118.exe

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dcbe1e887c121da0cebd9e40892f8a2e_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dcbe1e887c121da0cebd9e40892f8a2e_JaffaCakes118.exe

Modifies data under HKEY_USERS 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	dcbe1e887c121da0cebd9e40892f8a2e_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2920 wrote to memory of 2752	2920	dcbe1e887c121da0cebd9e40892f8a2e_JaffaCakes118.exe	29
PID 2920 wrote to memory of 2752	2920	dcbe1e887c121da0cebd9e40892f8a2e_JaffaCakes118.exe	29
PID 2920 wrote to memory of 2752	2920	dcbe1e887c121da0cebd9e40892f8a2e_JaffaCakes118.exe	29
PID 2920 wrote to memory of 2752	2920	dcbe1e887c121da0cebd9e40892f8a2e_JaffaCakes118.exe	29

C:\Users\Admin\AppData\Local\Temp\dcbe1e887c121da0cebd9e40892f8a2e_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\dcbe1e887c121da0cebd9e40892f8a2e_JaffaCakes118.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2920
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  PID:2752

C:\Users\Admin\AppData\Local\Temp\dcbe1e887c121da0cebd9e40892f8a2e_JaffaCakes118.exe
C:\Users\Admin\AppData\Local\Temp\dcbe1e887c121da0cebd9e40892f8a2e_JaffaCakes118.exe -m security
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:1588

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

T1046

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
44d3e9ac33811a0fcd688ed1e06482bc

SHA1
e26daad50814bcbfd7c0efdea8435eac58bfc46e

SHA256
591c6bf2435150b9c4cddab18b59206600f8564619bdfdabd601934bd685d041

SHA512
a06e186d7ca7133895671f0069c85bc8174fb9e3f447a8056234fc89d5b0e4fe1de181cd7706b25832a199dbe08eb6fddcbf3a779107c53b9cde4a75fd1b813f

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